I am an archlinux user and I installed AUR package done for your drivers
The package depend of another package foomatic-db-foo2zjs : https://aur.archlinux.org/packages/foomatic-db-foo2zjs
It also exists in archlinux official repository a foomatic-db package :
foomatic-db-foo2zjs installs foomatic-db and removes all foomatic-db files you include in your sources. The goal is to avoid 2 problems.
The first at package install. As foomatic-db package have installed files already, when installing foo2zjs package it comes a conflict with existing files.
The second problem at uninstall. Uninstall foo2zjs deletes foomatic-db files included in and it brokes foomatic-db package integrity.
As foomatic-db includes the same files that you put in directory foomatic-db of your sources, don't you think you could remove thoses files ?
I think for a lot of linux distro, it will avoid problems and conflicts with foomatic-db package.
Bests and thank you for work.